EP0028376B1 - Dispositif de refroidissement d'arc électrique pour cheminées d'appareils de coupure - Google Patents

Dispositif de refroidissement d'arc électrique pour cheminées d'appareils de coupure Download PDF

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Publication number
EP0028376B1
EP0028376B1 EP80106532A EP80106532A EP0028376B1 EP 0028376 B1 EP0028376 B1 EP 0028376B1 EP 80106532 A EP80106532 A EP 80106532A EP 80106532 A EP80106532 A EP 80106532A EP 0028376 B1 EP0028376 B1 EP 0028376B1
Authority
EP
European Patent Office
Prior art keywords
cells
cooling device
electric arc
section
vents
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80106532A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0028376A1 (fr
Inventor
Jean-Philippe Gelez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom SA
Original Assignee
Alsthom Atlantique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Publication of EP0028376A1 publication Critical patent/EP0028376A1/fr
Application granted granted Critical
Publication of EP0028376B1 publication Critical patent/EP0028376B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate

Definitions

  • the present invention relates to an electric arc cooling device for chimneys of breaking devices such as circuit breakers or contractors used for high currents.
  • the cooling device must be of good efficiency, that is to say that the gases leaving it must be at the lowest possible temperature in order to minimize the safety space that must always be provided in front of the chimney. .
  • the blocks are made of a plastic, thermo-plastic insulating material or of refractory material.
  • the cylindrical holes are relatively small in section and this results in a significant pressure drop in the plasma flow and moreover the contact surface between the gases and the insulating parts necessary for cooling is necessarily scaled down.
  • the arc extinguishing chambers have thick added cell partitions which are secured by screws and whose dimensions are bulky. .
  • the cooling device according to the present invention overcomes these drawbacks. In this one, in fact, the plasma flow is easy although its cooling is made more efficient and the size of the device is reduced to a minimum.
  • the present invention relates to an electric arc cooling device for chimneys of breaking devices comprising at least one block, the section of which is crossed by cells, characterized in that the partitions separating said cells are of a thickness less than or equal to one fifth of one of the dimensions on the side of the section of one of said cells.
  • FIG. 1 we see a cooling element 1 of refractory material such as ceramic consisting of cells 2 in the form of squares, separated by partitions 3 of very thin thickness, for example, 6/10 of a millimeter.
  • the cells 2 have for example 34/10 of a millimeter on the side.
  • the dimensions of the thickness of the partitions 3 are in a ratio of less than 0.2 with the dimensions of the side of the cell 2.
  • the elements are able to withstand without deterioration the passage of the electric arc which is several thousand degrees centigrade and to absorb the major part of the heat energy of this arc. Due to the small thickness of the partitions 3 and the large section of the cells 2, the plasma flows without significant pressure drop. Indeed in our example for an element 1 of 12 x 50 square millimeters in cross section the total surface of the cells 2 is approximately 400 square millimeters.
  • the cells 2 can be triangular (Figure 2) or hexagonal ( Figure 3) provided that the partitions 3 are thin and large void space; the cooling element 1 can be of rectangular or hexagonal section.
  • the cooling devices of the invention installed in the chimney of a circuit breaker or a contactor that can operate at voltages of 3000 volts and currents of several thousand amperes make it possible to considerably reduce the size of these devices as well as the safety space at the front of the chimney.
  • the applications are in the field of DC or AC circuit breakers which can be used in particular in railway technology.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
EP80106532A 1979-10-31 1980-10-24 Dispositif de refroidissement d'arc électrique pour cheminées d'appareils de coupure Expired EP0028376B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7927013 1979-10-31
FR7927013A FR2468987A1 (fr) 1979-10-31 1979-10-31 Dispositif de refroidissement d'arc electrique pour cheminees d'appareils de coupure

Publications (2)

Publication Number Publication Date
EP0028376A1 EP0028376A1 (fr) 1981-05-13
EP0028376B1 true EP0028376B1 (fr) 1985-01-09

Family

ID=9231235

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106532A Expired EP0028376B1 (fr) 1979-10-31 1980-10-24 Dispositif de refroidissement d'arc électrique pour cheminées d'appareils de coupure

Country Status (4)

Country Link
US (1) US4414446A (enExample)
EP (1) EP0028376B1 (enExample)
DE (1) DE3069949D1 (enExample)
FR (1) FR2468987A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6676228B1 (ja) * 2019-06-26 2020-04-08 三菱電機株式会社 気中遮断器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961290A (enExample) * 1950-05-09
FR745721A (enExample) * 1931-10-19 1933-05-13
US2362798A (en) * 1942-06-30 1944-11-14 Gen Electric Electric switchgear
FR895927A (fr) * 1943-04-08 1945-02-07 Delle Atel Const Electr Dispositif d'échappement des gaz pour disjoncteurs à auto-soufflage
GB568967A (en) * 1943-11-05 1945-04-27 David Reginald Davies Improvements in and relating to gas blast electric switches or circuit breakers
NL72730C (enExample) * 1946-07-29
GB776748A (en) * 1954-03-16 1957-06-12 Reyrolle A & Co Ltd Improvements relating to high-voltage air-break circuit-breakers
DE1064589B (de) * 1955-11-10 1959-09-03 Licentia Gmbh Elektrischer Schalter mit Lichtbogenloeschkammer und mit magnetischer Blasung
CH337254A (de) * 1955-11-30 1959-03-31 Bbc Brown Boveri & Cie Funkenkammeranordnung für Leistungsschalter
DE1040103B (de) * 1957-03-20 1958-10-02 Wissenschaftlich Tech Buero Fu Loescheinsatz fuer elektrische Schaltgeraete
DE1291009B (de) * 1963-06-01 1969-03-20 Stotz Kontakt Gmbh Installationsselbstschalter
FR1544434A (fr) * 1966-11-14 1968-10-31 Gen Electric Disjoncteur électrique à boîte de soufflage de l'arc
US4019005A (en) * 1974-12-30 1977-04-19 I-T-E Imperial Corporation Multi-pole circuit breaker with baffle shield venting

Also Published As

Publication number Publication date
FR2468987B1 (enExample) 1982-05-21
FR2468987A1 (fr) 1981-05-08
US4414446A (en) 1983-11-08
DE3069949D1 (en) 1985-02-21
EP0028376A1 (fr) 1981-05-13

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